Cosan (FRA:9CI0) E10: €0.05 (As of Jun. 2026)

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FRA:9CI0 Cosan SA FRA:9CI0
80 GF Score
Price €2.38
GF Value €2.95
Valuation Modestly Undervalued
! 3 Warning Signs
View Full Analysis

What is Cosan E10?

Cosan FRA:9CI0 -0.83% 80 E10 is €0.05 as of Jun. 2026. GuruFocus rates FRA:9CI0 with a GF Score™ of 80/100 and a GF Value™ of €2.95 (Modestly Undervalued). The stock has 3 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Cosan's adjusted earnings per share data for the three months ended in Jun. 2026 was €-0.054. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €0.05 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Cosan's average E10 Growth Rate was -81.80% per year. During the past 3 years, the average E10 Growth Rate was -43.30% per year. During the past 5 years, the average E10 Growth Rate was -23.20% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Cosan was 8.00% per year. The lowest was -43.30% per year. And the median was 3.95% per year.

As of today (2026-08-30), Cosan's current stock price is €2.38. Cosan's E10 for the quarter that ended in Jun. 2026 was €0.05. Cosan's Shiller PE Ratio of today is 47.60.

During the past 13 years, the highest Shiller PE Ratio of Cosan was 50.88. The lowest was 7.77. And the median was 16.90.


Cosan  (FRA:9CI0) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Cosan's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=2.38/0.05
=47.60

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Shiller P/E Ratio of Cosan was 50.88. The lowest was 7.77. And the median was 16.90.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Cosan E10 Related Terms


Cosan E10 Historical Data

* Premium members only.

The historical data trend for Cosan's E10 can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Cosan E10 Chart

Cosan Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.58 0.69 0.78 0.36 0.11

Cosan Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
E10 Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.27 0.24 0.11 0.07 0.05

FRA:9CI0 vs MPC, VLO, PSX: E10 Comparison

For the Oil & Gas Refining & Marketing subindustry, Cosan's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Cosan Shiller PE Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Cosan's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Cosan's Shiller PE Ratio falls into.


FRA:9CI0
80GF Score
Cosan SA FRA:9CI0
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Cosan E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Cosan's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=-0.054/177.5443*177.5443
=-0.054

Current CPI (Jun. 2026) = 177.5443.

Cosan Quarterly Data

per share eps CPI Adj_EPS
201609 0.215 109.986 0.347
201612 0.122 110.802 0.195
201703 0.150 111.869 0.238
201706 -0.050 112.115 -0.079
201709 0.330 112.777 0.520
201712 0.424 114.068 0.660
201803 0.208 114.868 0.321
201806 -0.036 117.038 -0.055
201809 0.023 117.881 0.035
201812 0.747 118.340 1.121
201903 0.230 120.124 0.340
201906 0.241 120.977 0.354
201909 0.460 121.292 0.673
201912 -0.288 123.436 -0.414
202003 0.048 124.092 0.069
202006 -0.133 123.557 -0.191
202009 0.123 125.095 0.175
202012 0.205 129.012 0.282
202103 0.218 131.660 0.294
202106 0.332 133.871 0.440
202109 1.125 137.913 1.448
202112 0.487 141.992 0.609
202203 0.199 146.537 0.241
202206 -0.050 149.784 -0.059
202209 -0.006 147.800 -0.007
202212 0.305 150.207 0.361
202303 -0.351 153.352 -0.406
202306 -0.425 154.519 -0.488
202309 0.276 155.464 0.315
202312 0.947 157.148 1.070
202403 -0.074 159.372 -0.082
202406 -0.083 161.052 -0.091
202409 0.098 162.342 0.107
202412 -3.181 164.740 -3.428
202503 -0.618 168.102 -0.653
202506 -0.319 169.670 -0.334
202509 -0.407 170.739 -0.423
202512 -0.918 171.765 -0.949
202603 -0.272 175.066 -0.276
202606 -0.054 177.544 -0.054

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of €0.05 mean?
Cosan (FRA:9CI0) has a E10 of €0.05 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Cosan and its competitors.
Is Cosan's E10 too high?
Cosan's current E10 is €0.05. Overall, Cosan has a GF Score™ of 80/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Cosan's E10 compare to MPC and VLO?
Cosan's E10 of €0.05 can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Oil & Gas company?
A good E10 depends on the Oil & Gas industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Cosan and its competitors. Cosan's current E10 is €0.05. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Cosan stock overvalued right now?
Based on GuruFocus' analysis, Cosan (FRA:9CI0) is currently considered Modestly Undervalued. The stock's GF Value™ is €2.95, compared to a current price of €2.38 — trading 19.3% below its estimated fair value. The current E10 is €0.05. Cosan's overall GF Score™ is 80/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Cosan (FRA:9CI0), the current E10 is €0.05 as of Jun. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Cosan (FRA:9CI0) Overvalued in 2026?

Based on GuruFocus' analysis, Cosan stock appears to be undervalued. The current stock price of €2.38 is trading 19.3% below its estimated GF Value™ of €2.95. GuruFocus considers Cosan to be Modestly Undervalued.

Key valuation signals for FRA:9CI0:

  • E10: €0.05
  • GF Value™: €2.95 vs. price of €2.38 (19.3% below fair value)
  • GF Score™: 80/100 with 3 warning signs

No single metric tells the full story. See the FRA:9CI0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Cosan Business Description

Industry EnergyOil & Gas
Other Exchanges CSAN:USACSAN3:Brazil
Address Avenue Brigadeiro Faria Lima, 4100 / 15th Floor Itaim Bibi, Sao Paulo, SP, BRA, 04538-132
Cosan SA engages in several services throughout the energy and logistics sectors. Its reportable segments are Raizen, Compass, Moove, Rumo, and Radar. It generates the majority of its revenue from Raizen which operates in the production, commercialization, origination, and trading of ethanol, bioenergy, resale, and trading of electricity, renewable sources, marketing, origination, and trading of sugar and fuels, and lubricant.
80GF Score

Get the complete analysis for FRA:9CI0

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€2.38
Price
€2.95
GF Value